Ventilation of subways.



No.848,900. I BATENTED APR. 2; 1901.

0. HAMMBRSTEIN.

VENTILATION 0F SUBWAYS.

APPLICATION FILED JULY 25, 1905.

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OSCAR HAMMERSTEIN, OF NEW YORK, N. Y.

VENTILATION Specification of Letters Patent.

OF SUBWAYS.

Patented April 2, 1907'.

Application filed July 25,1905. Serial No. 271,129.

To (all whom it may concern.-

Be it known that I, OSCAR HAMMERSTEIN, a citizen of the United States, residing in the borough of Manhattan, city, county, and

State of New York, have invented certain new and useful Improvements in Ventilation of Subways, of which the following is a specification.

My invention relates to means for ventilating what are commonly known as subway constructions, within which term are included such constructions. as may be directed under rivers or through the same.

Stated broadly, the invention may be said to consist in means whereby the foul air may be discharged from the subway and adequate provision made for discharging or carrying off any water which may leak or run into the subway.

In the accompanying drawings I have shown two forms in which my invention is embodied; but it will be understood that these forms are illustrative merely and that other constructions may be adopted within my invention.

Figure I is a transverse section of the subway or other structure in which my invention is embodied. Fig. II shows a modified form of construction. Either construction may be used or other forms adopted.

In the drawings, a indicates the sidewalkcover or street-cover containing the usual glass prisms, and b the supports for the overhead construction. Between the points a: and y, on each side of the center line 0 c, the prisms or lights are removed from the cover a, thus affording a free passage for air. Beneath these open spaces I provide guards g g, out of glass or some other suitable substance, transversely inclined, as shown, which would serve to carry off the water which may enter the subway through the openings in the cover. I provide longitudinal gutters or pipes p for carrying off the water from the lower parts of the guards g and drain-pipes d for conducting the water to a sewer or other suitable conduit.

In Fig. II, I have shown means whereby the vault-lights instead of being open at both sides are open in the middle between the section-lines y y, and the open space is protected by an inclined guard g, which may be of the same character as the guards g g shown in Fig. I. In connection with this guard I provide a longitudinal gutter p and a drain-pipe (Z. The principle of the operation is the same in both cases, but may be modified to suit existing conditions.

IVhile the natural draft in the tunnel or subway will under ordinary circumstances be adaquate to carry off the foul air through the medium of the devices constitutin my invention, suitable fans may be employed in connection therewith, the essential idea of the invention being to provide openings for the escape of air guarded by guards to carry off water and any refuse that may be dropped through the open vault-lights.

Having described my invention, I claim and desire to secure by Letters Patent 1. In a subway construction, the combination of a subway-tunnel, a roof-support, a roof perforated to establish free air-outlets to the outer atmosphere, a transversely-in clined guard beneath the perforated part of said roof and drainage means connected to said guard.

2. In a subway construction, the combination of a subway-tunnel, a roof-support, a roof open directly to the atmosphere on two sides thereof and a plurality of inclined guards beneath the said openings adapted to carry off water, and provided with drainage means.

3. In a subway construction, the combination of a subway-tunnel, a roof perforated to establish free air-outlets to the outer atmosphere, a transversely-inclined guard disposed beneath the perforated part of the roof and provided with a longitudinal gutter, and drainage means connected to said gutter.

4. In a subway construction, the combina tion of a subwaytunnel, a roof perforated to establish free air-outlets to the outer atmosphere, and a transparent guard disposed beneath said roof.

OSCAR HAMMERSTEIN.

Witnesses:

JAMES P. J. M RRIS, GEO. E. MORSE. 

